at91rm9200.h: fix ATMEL_PMX_AA_TXD2

This patch sets the ATMEL_PMX_AA_TXD2 to the correct value.
Signed-off-by: NAndreas Bießmann <andreas.devel@googlemail.com>
CC: Jens Scharsig <js_at_ng@scharsoft.de>
CC: eric@eukrea.com
Acked-by: NEric Bénard <eric@eukrea.com>

arch/arm/include/asm/arch-at91/at91rm9200.h

@@ -99,7 +99,7 @@
 #define ATMEL_PMX_AA_EMDC	0x00008000
 #define ATMEL_PMX_AA_EMDIO	0x00010000
 
-#define ATMEL_PMX_AA_TXD2	0x00810000
+#define ATMEL_PMX_AA_TXD2	0x00800000
 
 #define ATMEL_PMX_AA_TWD	0x02000000
 #define ATMEL_PMX_AA_TWCK	0x04000000